Question

Balance the equation:CH4 +O2→ CO2 + H2O [HOTS]

Answer 1

Answer:

methane + oxygen becomes carbon dioxide + water

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Answer 2

Answer:

CH 4  +  2O 2 → CO 2   +  2H 2 O

Explanation:

CH 4  +  O 2 → CO 2   +  H 2 O

First look at the C atoms. At first glance they are balanced with 1 C on each side.

Now look at the H atoms. They are not balanced. There are 4 H atoms on the left side and 2 H atoms on the right. Place a coefficient of 2 in front of the  H 2 O . We now have 4 H atoms on both sides.

CH 4  +  O 2 → CO 2   +  2H 2 O

Now look at the O atoms. They are not balanced. There are 2 O atoms on the left side and 4 on the right. Place a coefficient of 2 in front of the  O 2 . We now have 4 O atoms on both sides.

CH 4  +  2O 2 → CO 2   +  2H 2 O

The equation is now balanced. Each side has 1 C atom, 4 H atoms, and 4 O atoms.